[Bug sanitizer/70624] [6 Regression] Several hundred asan failures with 6.0 on x86_64-apple-darwin10.8

[howarth.at.gcc at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70624

--- Comment #6 from Jack Howarth <howarth.at.gcc at gmail dot com> ---
(In reply to Jakub Jelinek from comment #5)
> So can dyldVersionNumber be only used for #if SANITIZER_IOSSIM and otherwise
> use what it did before?

The IOSSIM code from llvm's sanitizer was never migrated into gcc so that would
be a red herring. The underlying issue is that the
/usr/lib/system/libdyld.dylib required for the current code to work was only
introduced in 10.7 (darwin11). So a test for the target being darwin10 or
earlier would be the appropriate test for utilizing the legacy code.